ifneq ($(KERNELRELEASE),)
obj-m:=module_a.o
else
KDIR :=/lib/modules/$(shell uname -r)/build
PWD  :="$(shell pwd)"
all:
	make -C $(KDIR) M=$(shell pwd) modules
clean:
	rm -f *.ko *.o *.mod.o *.symvers *.cmd  *.mod.c *.order *.mod
endif
